Definition of coordinate clause noun from the Oxford Advanced American Dictionary

 

coordinate clause

 noun
noun
NAmE//koʊˌɔrdn̩ət ˈklɔz//
 
(grammar)
 
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each of two or more parts of a sentence, often joined by and, or, but, etc., that make separate statements that each have an equal importance In the sentence “It stopped raining and the sun came out,” “It stopped raining” and “the sun came out” are both coordinate clauses, joined by the word “and.” compare subordinate clause
See the Oxford Advanced Learner's Dictionary entry: coordinate clause